Honda Accord 2.2 Problem Model 1994

colleagues and friends The present is that I have a problem with a Honda Accord 2.2 Model 1994, the problem is that the co is very high and I thought that it was the oxygen sensor but I found that it does not bring, it comes is with a potentimeter co but I do not know how much to calibrate it if anyone knows that I should do or how to solve this fault I appreciate it in the soul.

thank you so much..

Look well that I do carry the Lambda probe.
If the engine is the F22B2 takes it to the end of the exhaust manifold.
If it is the F22B5 engine it carries it just before the catalyst below the car

also checks the catalyst because many times in this breakdowns they go hand in hand